Background information can be found in textbooks and places like the CDC where information has been compiled on a particular topic.
Access Medicine contains many core texts such as Hurst's The Heart, Harrison's Internal Medicine or Ganong's Review of Medical Physiology.
Examples:
Examples:
From the National Library of Medicine this resource contains overviews of health conditions and links to published literature in PubMed.
Examples:
Many diseases and conditions have dedicated associations or organizations that focus on research and education. Below are a few examples.
Government sites
Organizations